DK3196382T3

DK3196382T3 - Sound absorbing floor especially for ships

Info

Publication number: DK3196382T3
Application number: DK16203247.8T
Authority: DK
Inventors: Dennis Brumm; Roland Stork
Original assignee: R&M Int Gmbh
Priority date: 2016-01-19
Filing date: 2016-12-09
Publication date: 2019-04-01
Also published as: EP3196382B1; DE102016200584A1; EP3196382A1; CN206485512U

Description

The invention relates to a sound-absorbing floor, in particular for ships, according to the preamble of claim 1. A floor of the generic type, the sole purpose of which is to meet fire protection requirements, is known from DE 202 06 230 U1. Here, support pipes with an internal thread are secured to a base plate by welding, with a vertically adjustable threaded bolt being arranged in each of said pipes. This threaded bolt carries a head plate, which is vertically adjustable together with the threaded bolt. On this head plate, a bottom plate is arranged, which has a lower covering configured as a fire protection plate. The sole purpose of this embodiment is to provide fire protection.

In passenger ships and yachts, there are more and more restrictions in terms of a maximum sound level to be observed. Attempts have been made to meet these requirements by providing oscillating elements including rubber mountings underneath the actual flooring. On the other hand, however, there is the general rule in shipbuilding that no flammable materials must be used behind coverings.

Therefore, it is the objective of the invention to provide a sound-absorbing flooring, in particular for ships, which is able to meet high sound absorption and fire protection standards.

This objective is attained according to the invention by the features in the characterizing part of claim 1.. On the one hand, an inherently rigid substructure is provided as support, which allows uneven areas of the deck or the like to be levelled out. The actual sound absorption then occurs in the floor panels disposed on the substructure.

The sub-claims include a number of advantageous and inventive further developments of the solution according to the invention.

Further details, advantages and features of the invention will be apparent from the ensuing description of an exemplary embodiment of the invention, taken in conjunction with the drawing, in which

Fig. 1 shows a sectional view of a bolt fastened to a deck, the bolt comprising a head holder forming part of a substructure,

Fig. 2 shows a view corresponding to Fig. 1 with a support rail fastened to the head holder,

Fig. 3 shows a longitudinal sectional view of a floor panel with groove and tongue,

Fig. 4 shows a longitudinal sectional view of a floor panel provided only with a tongue,

Fig. 5 shows a longitudinal sectional view of a floor panel provided only with a groove,

Fig. 6 shows a view corresponding to Fig. 2 with installed floor panel and an upper cover plate,

Fig. 7 shows a view corresponding to Fig. 6 rotated by 90°, and

Fig. 8 shows a plan view of a laid flooring without cover plate.

On a lower floor, for instance a deck 1 of a ship, bolts 2 are fastened in a vertical direction by means of a weld seam 3. At their upper end, the bolts 2 are provided with an external thread 4 to which a head holder 5 is screwed. A head holder 5 of this type comprises a sleeve 6 with an internal thread 7 adapted to the external thread 4 and an upper circular head plate 9 extending perpendicular to the common axis 8 of bolt 2 and sleeve 6. All head holders 5 installed for a flooring are screwed on the respective bolt 2 in such a way that the upper sides of the head plate 9 lie in a common plane. As can be seen from Fig. 8, bolts 2 are in each case arranged in a straight row (horizontal in Fig. 8) such that a respective support rail 10 can be placed on each row of head holders 5. The bolts 2, which are in each case arranged in one row at the same distance a from each other, of adjacent rows are staggered in relation to each other by half said distance, in other words a/2, as can be seen from Fig. 8 as well. The support rails 10 are in each case secured to the head holders 5 by means of an adhesive layer 11 and, furthermore, by means of rivets 12. The purpose of the rivets 12 is to prevent the support rails 10 from sliding in relation to the head plate 9 during the mounting thereof, and to secure the support rail 10 to the head plate 9 until the adhesive layer has cured. The adhesive layer 11 forms at the same time a non-positive connection and a chemical separation between the different materials of the head plate 9, namely steel, and of the support rail 10, namely aluminum, and, furthermore, is to prevent creaking sounds produced by small movements between the support rail 10 and the head plate 9.

The support rails 10 have a hat profile, in other words they have a downwardly open C-profile with laterally adjoining flanges 14. As a result, an extremely warpresistant support rail 10 is obtained. Furthermore, the flanges 14 can be used as support for end rails 10’, serving as cross-bracings, arranged in the edge region between adjacent support rails 10 if cross-bracings of this type should be necessary.

The actual sound-absorbing flooring 16 is installed on the substructure 15 formed by the bolts 2, the head holders 5, the support rail 10 and the end rails 10’. Said flooring 16 consists of floor panels comprising a lower half-shell 18 and an upper half-shell 19 between which a sound-absorbing core 20 of mineral wool is arranged. The half-shells 18,19 consist of steel or aluminum sheet metal. They are connected to each other substantially not directly, thus avoiding the formation of acoustic bridges. The elongate floor panels 17 configured in a rectangular shape with long sides 21 and short sides 22 are provided with a tongue 23 on one end, in other words a short side 22, and a groove 24 on the opposite short side 22, thus allowing them to be interconnected by plugging. In the groove 24, a C- shaped reinforcing member 25 is inserted. The short sides 22 of the floor panels 17 are partly covered by the half shells 18, 19, as can be seen from Figs. 3 to 5.

Corresponding to the installation, the floor panels 17’ or 17” arranged at an outer edge (see upper and lower sides of Fig. 8) of the flooring 16 only have a tongue 23 and no groove 24 (Fig. 4) or only a groove 24 and no tongue 23 (Fig. 5).

Finally, a cover plate 26 is arranged on top of the installed floor panels 17, 17’, 17”, which cover plate 26 may consist of aluminum, steel or a composite material. A cover plate 26 of this type is fastened to the floor panels 17, 17’ by means of an adhesive layer 27. If a cover plate 26 of this type is made of a screed, the adhesive layer can naturally be omitted. The cover plate 26 ensures an improved distribution of pressure.

Claims

1. Acoustic flooring, especially for ships, with a substructure (15) of non-combustible and rigid material such as leveled support comprising bolts (2) mounted vertically on a base plate or deck (1), bolts (2) are provided with head holders (5) with an upper head plate (9) which is height adjustable by threaded connection and with a base of floor panels (17, 17 ', 17 ") comprising a sound-absorbing core (20) and a lower cover, characterized in that a bearing rail (10) is provided on the bolts (2) arranged in a rectangular row with head holders (5), and that the lower cover and an upper cover of the core (20) are formed by by means of a lower half shell (18) and an upper half shell (19) which are not directly connected to each other and that the sound-absorbing core (20) consists of mineral wool.

Sound-attenuating floor according to claim 1, characterized in that the floor panels (17) are formed rectangular with each opposite longitudinal sides (21) and short sides (22), and on their short side (22) they are each provided with a federal (23) and a note (24).

Sound-attenuating floor according to claim 2, characterized in that the floor panels (17 ', 17 ") which terminate an outer edge of the floor (16) each have only a spring (23) or a groove (24).

Soundproofing floor according to one of claims 1 to 3, characterized in that the support rails (10) of the main holders (5) are fixed by means of rivets (12) and an adhesive layer (11).

Sound attenuating floor according to one of claims 1 to 4, characterized in that the floor panels (17, 17 ', 17 ") are arranged with their long sides (21) across the support rails (10).

Soundproofing floor according to one of claims 1 to 5, characterized in that the support rails (10) have a hat profile.

Soundproofing floor according to one of claims 1 to 6, characterized in that the head holders (5) on adjacent rows of bolts (2) are arranged with the head holders (5) offset relative to each other.

Soundproofing floor according to one of claims 1 to 7, characterized in that a cover plate (26) is arranged on the floor panels (17, 17 ', 17 ").

Soundproofing floor according to claim 8, characterized in that the cover plates (26) are adhered to the floor panels (17, 17 ', 17 ").

Soundproofing floor according to one of claims 1 to 9, characterized in that the main holders (5) are of steel and the supporting rails (10) are of aluminum.